I'm trying to run an old dos application in win 2000 that communicates with proprietary hardware through serial port com1, but I'm getting a message saying "Write to reserved register, value 0x0, register 2 ".

I got another program in this machine, that communicates through com1, so the port's working. Also this other program uses serial port only when it's running. There's no port monitor or something blocking it's use.

Tryed with core=dynamic, cycles=33000, didn't work either. Tryied connections in other (old) machine and they're OK.

By the way, I'm not getting an "RX Overrun" message, as posted in other message, just the message above.

Anyone knows something about this ?